Simulating human cognition in LLM agents: a free 126K-word book covering memory decay, emotion engines, personality drift, and 12 other cognitive subsystems

Most LLM agents treat the model as the entire cognitive system. System prompt defines personality, RAG handles memory, chain-of-thought handles planning. It works until it doesn't, and when it breaks, there's no structural theory to debug against. This book takes a different approach: treat the LLM as a translation layer and build the actual cognitive architecture around it. Memory with Ebbinghaus forgetting curves and reconstructive distortion. Emotion using OCC appraisal models and PAD mood space. Decision-making through GOAP planners perturbed by prospect theory.